[Bug] Chrome Freeze/Crash upon Download

[Nes370]

Hello, I've been using your extension for some months now and just earlier this week I was experiencing an issue where whenever I would download any file through Google Chrome, it would begin downloading the item and then immediately freeze up. Checking my downloads folder, the item was successfully downloaded, however Chrome would become inoperable. I would then be forced to close Chrome through Task Manager, and restart the application before I could resume web browsing.

I tried restarting Chrome multiple times, restarting my computer, and yet each time I would open Chrome and download my first item, it would freeze again. Eventually the problem went away when I disabled the Downloads extension. So I believe that something unexpected occurred in the Downloads extension that was the cause of my problems.

I'm sorry that I cannot pinpoint anything more specific than these symptoms and not a specific cause as now I've resolved the issue for myself by disabling the extension for a few days, and turning it back on now and the problem is no longer present. However, I thought it would be good to make you aware of the potential issue.

[Nes370]

Scratch that, the problem is still persistent. I have to disable the extension to avoid crashes still.

[D3SK3R]

Same here, also, I started noticing that the icon was blue, whenever I opened the browser (should be white, as I left it) and, when this happens, if I click the extension, chrome completely freezes for like, 20 seconds, then it shows the downloads and the icon goes back to white, I 'fixed' it by clearing all my downloads.

[JamesCoyle]

Thanks for reporting this. I'll look into it ASAP.

[JamesCoyle]

To help me narrow it down:

• Approximately how many downloads do you have when you visit chrome://downloads?
• If you go to chrome://extensions, what version of Download Manager is currently installed?
• While on that extensions page, click the developer mode switch at the top right and check if Download Manager has any errors listed.

[Nes370]

• When I visit chrome://downloads it doesn't give me an estimate count. It's virtually endless scrolling if I try to count it by hand. Looking at the Download Manager extension icon in the navbar, it is perpetually stuck at "0/4". I think possibly the issue is stemming from the fact I downloaded some .jar files that Windows Security flagged and auto-removed. Because I believe 4 is about how many files were removed.
• Download Manager v3.0.0
• I have Developer mode enabled, and I don't think there is any errors listed? In the Download Manager extension settings, I recently turned on the "Collect errors" setting after experiencing this issue. But I do not know how to view them if they do exist.

[Nes370]

[Nes370]

To further clarify, there seems to be 2 states of operation:

• One where I can download items and view the downloads shelf.
• Another where if I attempt to view the downloads shelf by clicking on the extension icon in the navigation bar, or download any file, Chrome immediately freezes, using up a bunch of RAM and inevitably crashes.

It briefly switched to the former for me, and that is how I was able to screenshot that information, but now it is back to the latter state. I'm not sure what is causing the switch in operability.

[JamesCoyle]

Would it be possible for you to go to chrome://downloads and clear all the downloads from the three dots menu in the upper right?

I can't seem to replicate the issue at the moment so it's not easy to debug this issue. If it is caused by the number of downloads you have then clearing your download history should hopefully stop the crashing issue. If that is the case it gives me somewhere to start looking and I can implement some improvements to prevent the crash in future.

The 0/4 badge in red is intended behavior due to the 4 errored downloads you have. Those downloads are considered in progress but halted due to the error. Clearing those downloads should remove the badge.

[Nes370]

Okay, I have cleared my downloads from chrome://downloads and the issue is still present. Attempting to download an image causes a crash, and clicking on the download shelf causes a crash.

[Nes370]

Okay, now I'm also having a new issue. When I go back to chrome://downloads, it's showing the items that should have been cleared earlier, and Chrome immediately starts to build up RAM usage and then eventually crashes from viewing the downloads page.

[Nes370]

Disabling the Download Manager allows me to safely view the downloads page without crashing. I cleared the downloads again while the extension was disabled, and then re-enabled the extension. I am now able to download images and view the downloads shelf without issue.

[JamesCoyle]

Right so it sounds like you had enough downloads that the stored states exceeded the local storage limit for extensions. It clears that storage on install so makes sense disabling it and enabling it again would sort that issue.

I do have one idea to reduce memory usage which will also help me fix another issue so I'll look to get that implemented when I have some free time and we can see if that fixes the issue properly.

[JamesCoyle]

I've not had chance to implement the changes required for this yet but I'm also going to look at changing how I check for download progress so I only fetch the data for downloads that are in progress rather than all of them at once.

Thank you for being patient. I'll hopefully be able to find some free time to work on this at some point soon.